Clay-mixer.



CLAY- MIXER.

(Application filed May 24, 1901.)

(No Model.)

INVENTOR ATTORNEY UNITED STATES PATENT OFFICE.

DAVID APPLEBY, JR., OF WILMINGTON, DELAWARE.

CLAY-MIXER.

SPECIFICATION forming part of Letters Patent No. 692,774, dated February 4, .1902.

Application filed May 24, 1901.

To all whom t may oon/cern:

Beit known that I, DAVID APPLEBY, Jr. a citizen of the United States of America, and a resident of Wilmington, county of Newcastle, and State of Delaware, have invented certain new and useful Improvements in Clay- Mixers, of which the following is a specification.

My invention relates to improvements in apparatus for mixing clay in brick-making, as hereinafter described, reference being made to the accompanying drawings, in which my improved apparatus is represented partly in side elevation and partly in vertical section.

-A represents an elevator, or it may be any other feeder that may serve for receiving the ground clay, either dry or more or less moist, and discharging it Ain a regulated iiow or stream. In this case it is represented as -re ceiving the clay from a spout b and discharging it by a spout ct into a screen c, through which the clay, except the coarse lumps,which are discharged through a spout d, falls into a spout e under the screen-wires and thence passes into a bin f, wherein is a vertical rotating mixer g, to which motion may be im- -parted by suitably-impelled means, as bevelwheels h, to which power may be applied in anyapproved way. The bin f has a spout 'i at the bottom discharging into another elevator j,and it has an overflow-spout l.; near the top discharging into another bin Z for reception of the thoroughly-mixed clay. -The elevator j discharges at the top into a spout m, which delivers into the upper end of the before-mentioned spout e under the screenwires, where the fresh incoming clay falls through the screen and mixes with the returns from the mixing-bin and enters the bin with said returns again entering therein. The elevator j will be of larger capacity or will be run fastersay to the extent-of three times,

more or less, the capacity of elevator A-and spout t' will also have three times the capacity of said elevator A, so that the clay may be practically run through the mixer three times. The discharge of completely mixed clay through spout 7c will equal the amount supplied by elevator A. A by-pass spout n is Serial No. 61,671. (No modeld connected with spoutsm and k, by which the elevator j may discharge directlyuinto bin l byropening the gate o and closing a gate p whenever it may be desired to empty the mixing-bin f. The spout d will in practice return the lumps to the grinding-mill.

By the use of this apparatus grinding the clay a second time for mixing is avoided,with economy of power and expense of apparatus, and the clay will be more thoroughly mixed.

By locating the mixing-bin and screen on a lower level than the grinding apparatus the clay can Ybe spouted directly from the grindi ing-mill into the bin, and thusthe elevator A may be dispensed with.

While it is preferable to return the ground clay into the mixing-bin through the spout e,

so as to mix .therein with the incoming new` clay, good results will be had by causing the two streams to meet in the bin, and the invention is not limited to the use of said spout e, andif the clay be ground sufficiently in the first place the screen may be omitted, and I do not, therefore, limit myself to the use of it.

What I claim as my invention is- 1. The combination with the mixing-bin and rotating mixer therein, of the feeder of the ground clay thereto, the screen intermediate of said feeder and bin, and vmeans for discharging the clay from the mixing-bin and repeatedly returning, accumulating and remixing it therein, and an overiiow-dischar'ge for the excess. f'

2. The combination with the mixing-bin and rotating mixer therein, of the feeder of the ground clay thereto, the screen intermediate of said feeder and bin, mixing-spout receiving the clay from the screen, means for discharging the clay from the mixing-bin and repeatedly returning and accumulating and remixing it therein, also means for mixing the returns and the incoming newvclay from the screen prior to entering the bin, means for discharging the clay from the mixing-bin and screen, feeder, and means for returning the clay to the bin, of the by-pass for emptying the said bin.

4. The combination with the mixing-hin and rotating mixer therein, of the feeder of l the ground clay thereto, means for discharging the clay from the mixing-bin and repeatedly returning, accumulating and remixing it therein and an oVerIioW-dscharge for the excess. 1o

Signed at Vilmington, Delaware, this 20th day of May, 1901.

DAVID APPLEBY, J R. Vitnesses:

HARRY IIOUGI-I, NICHOLAS S. STAYTON. 

